All of the following are invaders the immune system defends the body against EXCEPT __________

________ Quickly pick up ringing phones by the fourth ring if possible, and always take a message if you are busy with another call or a patient in the office

Indicate whether the statement is true or false

You are least likely to suspect a serious head, neck or spinal injury in which of the following patients?

A) A patient who is complaining of tingling in his hands after falling down a flight of steps. B) A patient who slipped on a wet bathroom floor. C) A patient who dove into a 4- foot deep swimming pool. D) A patient who was thrown from a vehicle during a collision.